Treatment of concentrated phosphoric acid

Details Treatment of concentrated phosphoric acid Treatment of concentrated phosphoric acid

1984-10-12

1985-11-05

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423316, C01B 2516

Patent

active

045513201

ABSTRACT:
The calcium content of high purity concentrated phosphoric acid is reduced to not more than about 2 ppm by contacting the acid with a strong cation exchange resin.

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patent: 3297401 (1967-01-01), Sakamura et al.
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patent: 3374055 (1968-03-01), Villalon
patent: 3492092 (1970-01-01), Higgin
patent: 3645682 (1972-02-01), Cochran
patent: 3764657 (1973-10-01), Frankenfeld et al.
patent: 3993735 (1976-11-01), Irani
patent: 3993736 (1976-11-01), Irani
patent: 4242198 (1980-12-01), Hill
patent: 4363880 (1982-12-01), Whitney et al.

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